US2698746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor-liquid contact apparatus
Assignee: Individual
•
Filing: 1950-10-11
•
Granted: 1955-01-04
•
Expires: 1970-10-11
Abstract
No abstract record available.
Inventors
- 👤 David G Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:01
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1780563A
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US1738870A
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US1811247A
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US1871819A
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US2070100A
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US2064390A
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US2333712A
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US2344700A
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US2366958A
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US2515090A
Cited
US2558222A
Cited
US2570215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |